baber/WOPTO huggingface dataset:
Patent GB-1459911-A (GB)
Title: Method and apparatus for fabricating transducers
IPC: G01L1/18
Filed: 1974-03-12
Abstract: 1459911 Semi-conductor devices KULITE SEMICONDUCTOR PRODUCTS Inc 12 March 1974 [2 April 1973] 10887/74 Heading H1K A strain gauge mounted on an insulating substrate, particularly glass, is manufactured by forming an, e.g. P-type piezoresistive element in a surface of a wafer of, e.g. N-type semi-conductive material so that it projects slightly from the surface, bringing the piezoresistive element into contact with a smooth surface of the insulating substrate and forming an electrostatic bond between them by passing electric current across the interface at a temperature, e.g. 300‹ C., such that the substrate is sufficiently conducting and selectively removing the semiconductive material so as to leave the piezoresistive material bonded to the substrate. The piezo-resistive element may be formed by diffusion of regions 54 in silicon or germanium substrate 51 masked with a thermally grown oxide layer, then by selective etching producing raised elements as in Fig. 3B. For ease of handling, the, e.g. glass substrate 52 is first electrostatically bonded to a conductive or semiconductive layer 50 (Fig. 3C) and ground to a desired low thickness. The piezo-resistive elements are electrostatically bonded to the glass substrate 52, layers 50 and 51 selectively etched away (Fig. 3E) and the assembly divided into individual glass-backed piezoresistors (Figs. 3F, 3G). These may be bonded to a metal force collector by electrostatic or epoxy resin bonding. Evaporated aluminium terminals may be provided at a suitable stage in the processing.
Patent GB-860768-A (GB)
Title: Improvements in or relating to a method of manufacturing rock and like drills and tosuch drills
IPC: E21B17/04
Filed: 1959-03-31
Abstract: 860,768. Percussive tools. SOC. D'ELECTROCHIMIE D'ELECTROMETALLURGIE ET DES ACIERIES ELECTRIQUES D' UGINE. March 31, 1959 [April 4, 1958], No. 10915/59. Class 124. A method of making a rock drill comprises surrounding one end of a drill rod with a sleeve of resilient material, locating a drill head on the rod with a skirt surrounding the sleeve, and crimping the skirt to compress the sleeve into firm engagement with the rod to anchor the head thereon. As shown, a drill head G having a cutting insert L and a skirt J is fitted over a sleeve K of rubber which surrounds the end H of a drill rod. The skirt is then crimped by swaging, presscrimping, or knurling so that the sleeve is compressed to make a tight fit on the rod. The head may have a conical section to mate with a conical end on the rod, with or without the insertion of a copper shim. A flange may also be formed on the rod by crimping a steel ring on to a resilient ring on the rod. Specification 807,819 is referred to.
Patent GB-164922-A (GB)
Title: Improvements relating to loose leaf books or binders
IPC: B42F13/12
Filed: 1920-04-20
Abstract: 164,922. Myatt, J. W. April 20, 1920. Post files; covers.-Loose-leaf post binders are provided with telescopic posts, one member of which passes freely through one of the clamping- bars and has an hinged extension piece also adapted to pass freely through the same clamping- bar. As shown in Fig. 4, the telescopic members d, e, complete separation of which may be prevented by headed wires f, are arranged between the clamping-bars a, the members e having knuckle-jointed extension pieces g with shoulders h. When not in use the extension pieces are folded down into a recess in the clamping-bar. In use the members e, g can pass freely through the clamping-bar and be cranked as shown in Fig. 5 or positioned as shown in Fig. 4.
Patent GB-231023-A (GB)
Title: Process for the purpose of rendering ether air free
IPC: C07C41/42
Filed: 1924-05-05
Abstract: 231,023. Mallinckrodt, E. May 5, 1924. Ether, distilling. - Ether is freed from dissolved air by distilling it in a number of stages such that the vapour of one stage passes through the less purified liquid of the next stage. The ether is admitted by the pipe 6 into a column still 8 containing a series of horizontal sections 9 and provided at the bottom with a steam-heating coil 10. As the ether descends the still it becomes more and more air-free, whilst the air and some ether vapour escape from the top of the still by the pipe 11 to a condenser 12. The airfree ether is withdrawn by the pipe 19 to a storage tank which is in communication with a gasometer containing an inert gas. Some of the ether from the condenser 12 is returned to the still by the pipe 13 and uncondensed ether passes to further condensers.
Patent GB-1395111-A (GB)
Title: Digital transmission systems
IPC: H04N21/2365
Filed: 1973-03-07
Abstract: 1395111 Digital signal transmission MICRO CONSULTANTS Ltd 6 March 1974 [7 March 1973] 11093/73 Heading G4H Digitally coded samples of two analogue inputs are transmitted on a common link by frequency displacement of the spectrum of the digital signals of one channel in up converter 21 so that the frequency spectra of the two channels are interleaved and mixing at 22 the frequency displaced signals with the undisplaced signals of the other channel. Recovery at the receiver is by comb filters 23, 24 and down converter 25. Alternatively, the other channel in the receiver may have an up converter.
Patent GB-196804-A (GB)
Title: Improvements in or relating to luminous instruments
IPC: G04B19/32
Filed: 1922-04-20
Abstract: 196,804. White, A. E., (American Radium Co.). April 20, 1922. Illuminating, means for.-Self-luminous clocks, watches, gauges, meters, and the like are, while readily visible and readable at night, also adapted to afford accurate and easy reading of the graduations and indicators by daylight or ordinary illumination. The hands, numbers, and graduations are provided with luminous material and a non-luminous medial line, in sr.ch a manner that the. luminous material diffuses to obliterate the non-luminous line for night readings. Figs. 1 and 2 show the dial etc., as it appears during night readings and daylight respectively. The hands &c. are provided with luminous material f and a non- luminous medial line d. The line d mav be formed by pressing up the metal of the hands, or by means of a wire secured in position, or bv other means. The line d may be of any desired length, and the edges of the top of the hand may be non-luminous as shown in Fig. 11. The edges of the hands, numerals, &c. may be turned up to provide recesses for the luminous material.
Patent GB-610611-A (GB)
Title: Improvements in or relating to snap-action electric switch devices
IPC: H01H5/18
Filed: 1946-04-11
Abstract: 610,611. Springs &c. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. April 11, 1946, No. 11162. [Class 108 (iii)] [Also in Group XXXVII] In a snap-action switch (see Group XXXVII) a disc 4 carries blade-spring arms 2 which are held bowed in compression by a sleeve 9 pinned on an operating rod 10 so that axial movement of the rod in either direction causes the contact ring to be snapped in the opposite direction. The blade-spring assembly comprises three radial arms 2 integral with sectors 3, which are clamped to the disc 4 by a channel member 6. This arrangement enables the use of a spring metal such as beryllium-copper in which the grain permits continued flexure in one direction only.
Patent GB-541127-A (GB)
Title: Improvement in aircraft and like structures
IPC: B64C1/00
Filed: 1940-07-04
Abstract: 541,127. Mounting instruments. SHIRLEY, F. July 4, 1940, No. 11241. [Class 79 (iii)] [Also in Group XXXIII] Components are attached to aircraft or like framework by means of a frame adapted to be built therein and a saddle member, carrying the components, taper fitting into the frame. A saddle member 4, consisting of an instrument panel, is provided with a tapering peripheral wall 5, Fig. 3, wedge fitting into the corresponding tapering wall 3 of the frame 1, a flange 6 on the wall 5 abutting against the face 7 of the frame. The latter is surrounded by a flange for fitting the frame to the framework., The saddle member, as in this example, may itself be subdivided into sub-frames 9 into which sub-saddles carrying the components similarly fit. The component mountings may fit directly into the sub-frames. The sub-saddles the preferably made so as to receive the instruments by a taper, screw, or bayonet fit. The respective saddles and frames may be locked together by self-centering taper pins or bolts passing through their walls. The frame may be of L-section and the saddle member without a flange. Both members may be of aluminium, aluminium alloy, steel, or artificial resin. The components may comprise petrol tanks, wireless masts, engines, wings, &c.
Patent GB-200922-A (GB)
Title: Improvements in or relating to the manufacture of plastic materials and to apparatus therefor
IPC: B26D1/00
Filed: 1922-04-21
Abstract: 200,922. British Cellulose & Chemical Manufacturing Co., Ltd., Small, F. T., and Dickie, W. A. April 21, 1922. Cutting-machines. - Apparatus for cutting celluloid or celluloid-like material containing little or no volatile solvents comprises a heated cutting knife with or without auxiliary means for heating the surface, layer of the material. A celluloid block 3 is dovetailed to a carrier 3 held to a reciprocating table 1. A stationary knife 18, is mounted in an electrically insulated carrier 8 adjusted for height by screw gearing 13, 11, 16, 15 and makes metallic contact with a block 22 carrying thick copper cable. A low voltage alternating current is passed through the cable, and the block 22 is heated by the rapidly changing magnetic field set up in it. This method of heating is stated to be 'less likely to cause fires than resistance heading. Heating irons 28, 29 positioned by springs 33 and mounted on bars 32 resiliently held to the tool carrier are also heated by inductance and contact with the surface of the material before and behind the knife. In a modification the knife is reciprocated and the material stationary and according to a further modification the apparatus is adapted for cutting rods.
Patent GB-1218724-A (GB)
Title: Pumps driven by direct current motors
IPC: H02K29/08
Filed: 1969-03-03
Abstract: 1,218,724. Electric motors. SIEMENS A.G. 3 March, 1969 [2 March, 1968], No. 11298/69. Heading H2A. A pump is driven by a commutator-less D.C. motor whose rotor 1 is mounted in the sealed pump chamber and whose stator winding 9 and associated semi-conductor elements 10 are mounted outside that chamber. The semiconductor elements 10, which may be magnetoresistors or Hall generators, sense the position of the permanent magnet rotor for controlling a circuit for commutation in the winding 9. As shown the rotor is mounted in bearings 5, 7 and comprises an impeller 3 and a cylindrical permanent magnet 2. The magnet preferably has two poles and is made of a material which is corrosion-resistant, e.g. barium ferrite or aluminium nickel-cobalt alloy, and has a preferred direction of magnetization. The pump chamber comprises inlet and outlet ducts 11, 12 and a sleeve 8 in the rotor-stator gap. The impeller 3 and the chamber may be made of polymethylmethacrylate, polyethylene or corrosion-resistance metals. The pump may be used for electrolytes or for radio-active, corrosive or poisonous liquids and may be used in automobiles.
Patent GB-660929-A (GB)
Title: Method and apparatus for adjusting a capacitor
IPC: G01R31/01
Filed: 1949-04-28
Abstract: 660,929. Condensers. RADIO CORPORATION OF AMERICA. April 28, 1949 [May 22, 1948], No. 11332/49. Class 37. The value of a condenser having a metallized surface on a dielectric is adjusted by applying to said surface in accordance with a scanning pattern a stylus 2 carrying an electric current disintegrating the metal being scanned, simultaneously measuring the change of capacity produced, and cutting off the current when the desired value has been obtained. A capacitative bridge 4 is used for the measuring and when balanced acts through a relay 5 to lift the resiliently-mounted stylus and stop the current. The condenser comprises two or four discrete metal surfaces 12 on strips of mica 8 supported by grommets on a jig 6 on a central vertical pivot 13 on a carriage 14 sliding on tracks 15. Contacts allow each metal surface in turn to be connected to the capacitative bridge and to the current supply, the other terminal being connected to the stylus 2, which is biassed by a bow spring 46, by a hinge 45 against the condenser and is reciprocated in adjacent parallel lines in one plane over the metal surface. The stylus 2 is mounted on a platform 31 pivoted at 33 on a platform 53, the stylus and platform 31 being raised by an articulated rod 36 on actuation of the relay 5. The sideways scanning movement is imparted to the stylus by a motor 26 through an eccentric 47, and another motor rotates through gears 28 a lead screw 29 with a following half nut 30 biassed by a return spring 60, and the nut 30 is attached to the platform 53 to obtain forward movement of the hinged platform 31 and the stylus. A third motor 32 controls the upward movement of the rod 36 through an eccentric 37 on actuation of the relay 5. The motor 32 has a cam 39 operating two limit switches and is braked to prevent the motor from coasting so that the stylus is moved only to the required up or down position. If the two pairs of capacitators on the jig 6 are to be adjusted to different values, padding condensers 21, 22 are plugged in sockets 19, 20 in parallel or series in the capacitative bridge. The bridge is arranged with electronic valves and a phase discriminator network so that when the bridge is balanced, a voltage phase reversal takes place to operate the relay 5.
Patent GB-177426-A (GB)
Title: Improved implement for making holes in wood or the like, particularly in trees and like plants
IPC: A01G7/06
Filed: 1921-04-19
Abstract: 177,426. Burnet, E. April 19, 1921. Mortising. - An implement for making a hole in wood or other material capable of being nailed, and at the same time lining the hole with metal, consists of a spike or nail a with a sleeve b which has a cutting-edge at its lower end. The nail and sleeve are driven into the wood &c., and the nail is then withdrawn ; the head is preferably polygonal to facilitate the withdrawal. tre 17 and a clamping-ring 12, the drum being adjusted to alter the depth of cut. The drum also carries a driving motor, such as an electric motor 43, with a suitable plug switch and controlling switch (not shown), which motor drives the spindle 26 through reducing belt gearing and a counter-shaft 57, eccentrically mounted in a split sleeve 50, with an adjusting handle 54, and clamp bolt 55. The drum also carries a guard 38 co-operating with a guard 37 fixed to the frame, so that adjustment of the drum does not uncover the cutter. The spindle 26 is lubricated by oil introduced through an opening 31 into the space 30 between the sleeve 29 and an inner sleeve 28, closed by a packed plug 32. A scale is marked on the edge of the base 8 parallel to the spindle 26, and an adjustable stop sliding thereon limits the width of the piece cut. Or a mitering attachment may be made use of consisting of a guidebar 76 adjustably mounted on a bracket 74 attached to the edge of the work 66<1> and adapted to fit a recess 77 on the underside of the base 8.
Patent GB-1273472-A (GB)
Title: Improvements in flame conveying tubes or flash tubes for ignition devices for gas burners
Inventor: HUGUET ALAIN
IPC: F23Q1/02
Filed: 1970-03-10
Abstract: 1,273,472. Gas burner igniters. APPLICATION DES GAZ. 10 March, 1970 [13 March, 1969], No. 11351/70. Heading F4F. An ignition device for burners comprising a liquefied gaseous fuel container 1, an outlet valve 3 from the container into a flash tube 10, and a serrated wheel and flint arrangement 17, 14 for ignition of gas circulating in the tube 10, the flame produced progressing along the tube to the outlet, where it is stabilized by the presence of a pilot flame provided by a pilot tube 26. To operate the device, the push-button 21 is pushed, against the action of springs 23, to rotate the serrated wheel 17 via a spindle 18 and a drive roller 20, simultaneously opening the gas valve 3 by means of a lever 25, which lifts a plug 8, integral with the valve stem 7 of the valve 3. Gas flows into the tube 10 through a nozzle 9, air enters the tube through air inlets 10a, and the mixture is ignited by sparks from the flint, which enter the tube through an opening 10b. A pilot tube 26, fixed at one end in the nozzle 9 provides a jet of gas unmixed with air which is ignited by the main flame to provide a pilot flame. The tube 26 is centred at the outlet end of the tube 10 by means of a metal clip 27a (Fig. 3, not shown) lodged in a groove 10c in the tube 10. Any other suitable ignition device, for example a piezo-electric device, may be used instead of the wheel and flint arrangement.
Patent GB-117944-A (GB)
Title: Improvements relating to Bottle Capping and Sealing Machines.
Inventor: BRADLEY JOSIAH
IPC: B67B3/14
Filed: 1917-08-08
Abstract: 117,944. Bradley, J. Aug. 8, 1917. Capsules, ' crown corks,' and the like, applying.-In a bottle capping and sealing machine, the crimping-die G, which co-operates with the fingers C of the capping-plunger B, is slidably mounted in brackets J which are pivotally mounted on a spring-pressed yoke-arm F pivoted to the intermittingly rotating turret E of the machine, so that the die can yield to accommodate the fingers C without danger of breakage. The pins g, by means of which the channelled brackets J are mounted in the yoke F, are acted upon by springs h secured to the outside of the yoke. Springs j, arranged between stops k on the brackets and shoulders l on the die, keep the die centred, its outward movement being limited by a stop-rod D which moves with the plunger B and engages with the front edge of the die. Pins m on the die contact with the brackets when the die is in central position.
Patent GB-1005777-A (GB)
Title: Treatment of aromatic hydrocarbons
IPC: C07C6/12
Filed: 1962-03-26
Abstract: Alkylated hydrocarbons are obtained by passing an aromatic or saturated aromatic hydrocarbon feed stream together with an alkylated aromatic hydrocarbon into a reaction zone under conditions including a temperature of 400-1,000 DEG  F. to effect isomerization, disproportionation and transalkylation (isom.-dis.-trans.) in the presence of a moving bed of an acidic silica-based catalyst, and introducing a condensation alkylating agent to effect alkylation, the alkylating agent being added at a point such that the weight ratio of catalyst in the alkylation reaction to that in the isom.-dis.-trans. reaction is 0.1-2 : 1. The feed may be benzene, naphthalene, indane, decatin, or tetralin or an alkylated derivative thereof; xylenes may be used in the production of durene.  After removal of the desired material from the product the residue, which will have an average number of carbon atoms about the same as the removed material, is recycled. Ethers are preferred, alkylating agents containing one or two carbon atoms in each alkyl group; alkanols may be used alternatively. The moving bed (not fludized) of catalyst may move upwardly or downwardly and in the latter case concurrently, or countercurrently to the reactants, and is regenerated by oxidation. Silica-alumina containing 10-30% of alumina is the preferred catalyst; it may be mixed with clay.  Reaction is effected at up to 2,000 p.s.i.g. with an aromatic space velocity of 0.1-10 wt./hr./wt. and a molar ratio of alkylating agent to aromatic of 0.1-2 : 1.
Patent GB-527565-A (GB)
Title: A direct process for producing acetyl cellulose soluble in various organic solvents
IPC: C08B3/06
Filed: 1939-04-14
Abstract: 527,565. Cellulose acetate ; artificial filaments &c. SAKURADA, I., and TANIGUCHI, M. April 14, 1939, No. 11433. [Class 2 (ii)] Cellulose is subjected to acetylation by means of acetic anhydride with glacial acetic acid and sulphuric acid, and the acetylation is stopped when the acetylation has proceeded to 80-95 per cent. of complete acetylation. The liquid reaction mass is then formed into a thin layer or fine streams so as to allow evaporation of volatile constituents. The solution is then coagulated in the form of a thin film or fine filaments by means of a precipitating agent such as water. Diluents may be added to the acetylation liquid at the conclusion of the esterification before forming it into a thin layer or fine streams. The product has an acetyl value of 50.0-59.4 per cent. It is soluble in acetone, methyl acetate, methyl formate, glacial acetic acid, acetic anhydride, aniline, pyridine, chloroform, tetrachlorethane, and methylene chloride. Acetylation is stopped at the desired value by lowering the temperature or neutralizing the catalyst by adding sodium acetate. Glacial acetic acid or acetone may be used as diluent at the conclusion of the acetylation. In an example, cellulose pre-treated with acetic acid is esterified with acetic acid, acetic anhydride, and sulphuric acid. Acetone is subsequently added. The solution is formed into a thin layer, volatile substances are evaporated, and water is then added to coagulate the cellulose acetate as a thin film. The product may be dissolved in a solvent and formed into artifical silk or films. In another example, the esterification solution is formed into a thin layer to evaporate volatile constituents, and then spun into a solution of sodium acetate to form fine filaments.
Patent GB-114870-A (GB)
IPC: F41A9/83
Abstract: 114,870. Bollington, A. B., and Thomason, J. March 26, 1917. Cartridge magazines, Lewis type, machines for filling. Consists mainly in mounting the feed-wheel which conveys the cartridges from a hopper shoot into the magazine in a yielding support. In the form shown, the machine comprises a hopper a, shoot c, and feed-wheel d, the whole being fixed by a screw m to the usual magazine filling handle x to which also is keyed the centre block of the magazine to be filled. The cartridges are placed in the hopper a a handful at a time, and half round projections b in the hopper cause the bases of the cartridges to fall lowermost into the shoot c, the rims of the cartridges being guided in the shoot by tapered recesses c<3> until they rest upon a tooth of the feed-wheel protruding into the shoot. This wheel, which also engages a cartridge in the magazine, is set in motion by rotating the magazine pan and is mounted in inclined bearings f in a plate g which can yield upwardly against the action of a spring g<1>. The cartridges are moved by the feed-wheel on to a plate p and under a spring- pressed member k<2> which has a pawl k<1> to engage teeth on the feed-wheel to stop the mechanism if a cartridge is missed. The member k<2> and pawl k<1> can be raised when desired by operating a lever l.